nix-conf/renovate.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": [
    "config:base"
  ],
  "git-submodules": {
    "enabled": true
  },
  "lockFileMaintenance": {
    "enabled": true,
    "automerge": true,
    "extends": ["schedule:daily"]
  },
  "nix": {
    "enabled": true
  }
}